In order to make a hook for an earring, you will need the following: round nose pliers, a wire cutter, a nail file or sand paper, an ink pen, 20-22 gauge wire. With your round nose pliers, make little hook, in the end of the wire. Bend it, until it makes a little loop.
Shape the hook by wrapping it around and ink pen. Use the ink pen, as a form. Use your wire cutters to cut off the excess. Next, you'll need to perfect the shape, by smoothing it out, with the pliers and filing down the rough edges with a hail file or sand paper.